<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
		
		<!-- 卡片视图 -->
        <el-card>
            <!-- 添加角色按钮 -->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
                </el-col>
            </el-row>
            <!-- 角色列表 -->
            <el-table :data="rolesList" border stripe>
				<!-- 展开权限 -->
                <el-table-column type="expand">
					<template slot-scope="scope">
						<!-- 渲染一级权限 -->
						<el-row v-for="(item1, i1) in scope.row.children" :key="item1.id" :class="['bdbottom', i1===0 ? 'bdtop' : '', 'vcenter']" >
							<el-col :span="5">
								<el-tag closable @close="removeRihgtById(scope.row, item1.id)">{{item1.authName}}</el-tag>
								<i class="el-icon-caret-right"></i>
							</el-col>
							<!-- 渲染二级和三级权限 -->
							<el-col :span="19">
								<!-- 二级权限 -->
								<el-row v-for="(item2, i2) in item1.children" :key="item2.id" :class="[i2===0 ? '' : 'bdtop', 'vcenter' ]">
									<el-col :span="6">
										<el-tag closable @close="removeRihgtById(scope.row, item2.id)" type="success">{{item2.authName}}</el-tag>
										<i class="el-icon-caret-right"></i>
									</el-col>
									<el-col :span="18">
										<!-- 三级权限 -->
										<el-tag v-for="(item3, i3) in item2.children" :key="item3.id" type="warning" closable @close="removeRihgtById(scope.row, item3.id)">{{item3.authName}}</el-tag>
									</el-col>
								</el-row>
							</el-col>
						</el-row>
					</template>
				</el-table-column>
				
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述人" prop="roleDesc"></el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <!-- 编辑按钮 -->
                        <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size="mini">
                            编辑</el-button>
                        <!-- 删除按钮 -->
                        <el-button @click="removeUserById(scope.row.id)" type="danger" icon="el-icon-delete"
                            size="mini">删除</el-button>
                        <!-- 分配权限按钮 -->
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog @close="addDialogClose" title="添加角色" :visible.sync="addDialogVisible" width="50%">
            <el-form :model="addForm" status-icon :rules="addFormRules" ref="addFormRef">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="addForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述人" prop="roleDesc">
                    <el-input v-model="addForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户信息的对话框 -->
        <el-dialog @close="editDialogClosed" title="修改用户" :visible.sync="editDialogVisible" width="50%">
            <el-form :model="editForm" status-icon :rules="editFormRules" ref="editFormRef">
                <el-form-item label="角色名" prop="roleName">
                    <el-input v-model="editForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUser">确 定</el-button>
            </span>
        </el-dialog>
    
		<!-- 分配权限的对话框 -->
		<el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="30%" @close="setRightDialogClosed">
		  <!-- 树形控件 -->
		  <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="setRightDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="allotRights">确 定</el-button>
		  </span>
		</el-dialog>
		
	</div>
</template>

<script>
    export default {
        data() {
            return {
                //角色列表
                rolesList: [],

                //对话框的显示与隐藏
                addDialogVisible: false,
                //添加用户的表单数据
                addForm: {
                    roleName: '',
                    roleDesc: ''
                },
                //添加表单的验证规则对象
                addFormRules: {
                    roleName: [
                        { required: true, message: '请输入角色名称', trigger: 'change' },
                        { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
                    ],
                    roleDesc: [
                        { required: true, message: '请输入角色描述人', trigger: 'change' },
                        { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
                    ]
                },

                //控制修改用户对话框的显示与隐藏
                editDialogVisible: false,
                //查询用户信息对象
                editForm: {},
                //修改表单的验证规则对象
                editFormRules: {
                    roleName: [
                        { required: true, message: '请输入角色名称', trigger: 'change' },
                        { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
                    ],
                    roleDesc: [
                        { required: true, message: '请输入角色描述人', trigger: 'change' },
                        { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
                    ]
                },
				
				//分配权限对话框的显示与隐藏
				setRightDialogVisible: false,
				//所有权限的数据
				rightsList: [],
				//树形控件的属性绑定对象
				treeProps: {
					label: 'authName',
					children: 'children'
				},
				//默认选中的权限id值数组
				defKeys: [],
				//当前即将分配权限角色的id
				roleId: ''
			}
        },
        created() {
            //获取所有的角色数据
            this.getRolesList()
        },
        methods: {
            //获取所有的角色数据
            async getRolesList() {
                const {
                    data: res
                } = await this.$http.get('roles')
                if (res.meta.status !== 200) return this.$message.error('获取用户权限失败！')
                //获取角色的数据列表
                this.rolesList = res.data
                console.log(res);
            },

            //监听添加框的关闭事件表单清空
            addDialogClose() {
                //关闭对话框再次打开后表单清空
                this.$refs.addFormRef.resetFields()
            },
            //点击确定添加新用户
            addUser() {
                //预验证
                this.$refs.addFormRef.validate(async valid => {
                    console.log(valid);
                    //添加失败返回
                    if(!valid) return
                    //添加成功
                    const {data: res} = await this.$http.post('roles', this.addForm)
                    
                    if (res.meta.status !== 201) return this.$message.error('更新用户状态失败！')
                    this.$message.success('更新用户状态成功！')
                    //添加后隐藏对话框
                    this.addDialogVisible = false
                    //更新用户列表
                    this.getRolesList()
                })
            },

            //修改按钮数据储存
            async showEditDialog(id) {
                console.log(id);
                const {data: res} = await this.$http.get('roles/' + id)
				console.log(res);
                if (res.meta.status !== 200) return this.$message.error('获取用户信息失败！')
                //获取信息
                this.editForm = res.data
                this.editDialogVisible = true
            },
            //监听修改框的关闭事件表单清空
            editDialogClosed() {
                //关闭对话框再次打开后表单清空
                this.$refs.editFormRef.resetFields()
            },
            //点击确定修改用户信息
            editUser() {
                //预验证
                this.$refs.editFormRef.validate(async valid => {
                    console.log(valid);
                    //添加失败返回
                    if(!valid) return
                    //添加成功
                    const {data: res} = await this.$http.put('roles/' + this.editForm.roleId, {
						roleName: this.editForm.roleName,
                        roleDesc: this.editForm.roleDesc
                    })
                    console.log(res);
                    if (res.meta.status !== 200) return this.$message.error('修改用户信息失败！')
                    this.$message.success('修改用户信息成功！')
                    //添加后隐藏对话框
                    this.editDialogVisible = false
                    //更新用户列表
                    this.getRolesList()
                })
            },

            //根据id删除对应用户信息
            async removeUserById(id) {
                console.log(id);
                const confirmResult = await this.$confirm('此操作将永久删除该用户信息, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err => err)

                //如果用户确认删除，则返回值为字符串 confirm
                //如果用户取消了删除，则返回值为字符串 cancel
                console.log(confirmResult);
                if(confirmResult !== 'confirm') {
                    return this.$message.info('已取消了删除')
                }

                const {data: res} = await this.$http.delete('roles/' + id)
				console.log(res)
                if (res.meta.status !== 200) return this.$message.error('删除用户信息失败！')
                this.$message.success('删除用户信息成功！')
                this.getRolesList()
            },
			
			//点击符号x删除权限
			async removeRihgtById(role, rightId) {
				//弹框提示是否进行删除
				const confirmResult = await this.$confirm('此操作将永久删除该用户信息, 是否继续?', '提示', {
				    confirmButtonText: '确定',
				    cancelButtonText: '取消',
				    type: 'warning'
				}).catch(err => err)
				
				if(confirmResult !== 'confirm') {
				    return this.$message.info('已取消了删除')
				}
				const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
				if (res.meta.status !== 200) return this.$message.error('删除权限失败！')
				this.$message.success('删除权限成功！')
				//用这个更新数据会刷新页面影响用户体验
				// this.getRolesList()
				role.children = res.data
			},
			
			//分配权限对话框的显示与隐藏
			async showSetRightDialog(role) {
				this.roleId = role.id
				
				const {data: res} = await this.$http.get(`rights/tree`)
				if (res.meta.status !== 200) return this.$message.error('获取权限失败！')
				//获取所有权限的数据
				this.rightsList = res.data
				console.log(this.rightsList)
				
				//递归获取三级节点的id
				this.getLeafKeys(role, this.defKeys)
				
				this.setRightDialogVisible = true
			},
			//通过递归的形式获取角色下所有三级权限的id
			getLeafKeys(node, arr) {
				//如果当前node节点不包含children属性，则是三级节点
				if(!node.children) {
					return arr.push(node.id)
				}
				
				node.children.forEach(item => this.getLeafKeys(item, arr))
			},
			//监听分配权限对话框的关闭事件
			setRightDialogClosed() {
				this.defKeys = []
			},
			//点击确定为角色分配权限
			async allotRights() {
				const keys = [
					...this.$refs.treeRef.getCheckedKeys(),
					...this.$refs.treeRef.getHalfCheckedKeys()
				]
				console.log(keys)
				
				const idStr = keys.join(',')
				
				const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
				if (res.meta.status !== 200) return this.$message.error('分配权限失败！')
				this.$message.success('分配权限成功！')
				this.getRolesList()
				this.setRightDialogVisible = false
			}
        }
    }
</script>

<style lang="less" scoped>

</style>
